Steam-hammer



(No Model.)

2 Sheets-Sheet 1. T. M. SHEARER.

STEAM HAMMER.

Patented Mar. 27, 1894.

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(No Model.) 7 2 Sheets-Sheet 2.

T.- M. SHEARER.

STEAM HAMMER.

No. 517,150. v Patented Ma.1-.27, 1894.

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STEAM-HAM MER.

SPEGIFIGATION' forming part of Letters Patent No. 517,150, dated March 27, 1894. Application filed June 30,1893. Serial No. 479,297- (No model.)

To all whom it may concern:

Be it known that I, THEODORE MICHAEL SHEARER', a citizen of the United States, residing at Butler, in the county of Butler and State of Pennsylvania, have invented a new and useful Steam-Hammer, of which the following is a specification.

Thisinvention relates to steam hammers; and it has for its object to provide certain improvements in machines of this character whereby the angle of drop can be easily controlled by a single person having charge of the hammer.

To this end the main and primary object of the present invention is to providea steam hammer capable of being swung from a vertical to a horizontal position, thus providing means for dressing off work at various angles, and in this use is particularly adapted for dressing the beveled edges and the faces of drilling bits employed in drilling wells.

With these and other objects in View which will readily appear as the nature of the invention is better understood, the same consists in the novel construction, combination and arrangement of parts hereinafter more fully described, illustrated and claimed.

In the accompanying drawings:-Figure 1 is a front View of a steam hammer mounted for operative use, and representing the hammer in a vertical position to dress off the flat and concaved sides of a drilling bit. Fig. 2 is a side elevation of the construction shown in Fig. 1, illustrating the hammer swung at an angle, to dress the beveled cutting edge of a drilling bit. Fig. 3 is a side elevation of a modified construction of the hammer frame having a single pivot, in order to provide for arching the hammer at one side of the base support.

Referring to the accompanying drawings, A represents the floor under which is bolted the stationary base casting B. The stationary base casting or support B, is constructed in a suitable size according to the size of the hammer supported thereby, and is provided at opposite lower edges thereof with the securing lugs 17, through which pass the bolts b, to securely fasten the base casting or frame f to the floor. Said stationary supporting base B, is constructed so as to accommodate between the sides thereof the shiftable anvil block 0, and at each side of the said anvil block 0, the stationary base is further provided with the opposite parallel bearing sides D, provided near their upper extremities with perforations E.

As clearly shown in the drawings, the base B, is open and sufiiciently large, so as to permit of the anvil 0, being shifted therein, and said anvil C, is provided at one side thereof with the shouldered olfset c, which is dis posed below the main top face of the anvil, in order to form a supplemental anvil face, the use of which will be hereinafter more particularly referred to, and by reason of providing for shifting the anvil within the supporting base frame, the main top face and the lower supplemental face 0, can be brought directly under the vertical center of the machine, whereby the ram can be made to properly work on the material resting on either of the top faces of the anvil block.

The perforations E, near the upper extremities of the parallel bearing sides D, of the stationary base, receive the pivot bolts F,'which form pivotal supports for the swinging hammer frame G. The swinging hammer frame G, is of an inverted U-shape and is provided with the opposite parallel frame arms H, having lower off-standing angled ends I, which are perforated at their lower extremities as at h, to fit over the inner ends of the pivot bolts F, and inside of the bearing sides D, thereby providing a firm and simple pivotal connection between the swinging hammer frame G, and the supporting base B. The inverted U- shaped swinging hammer frame G, has securely bolted to the top piece thereof the steam cylinder J, the lower flanged head j, of which, provides convenient means for the easy attachment of the cylinder to the frame by means of suitable securing bolts, and said steam cylinder J, supports at one side thereof the usual steam chest K. The ordinary valve sliding inside of the steam chest, is controlled by means of the valve rod L, working inside of the chest and having connected pivotally thereto one end of the valve lever M, which lever is pivoted at m, to a suitable point of attachment at one side of one of the frame arms H, and has pivotally conneotedthereto the upper end of the curved slidingguide bar m, the free portion of which freely slides in the swiveled guide box m suitably attached to the hammer or ram N.

By manipulating the lever M, in the ordinary manner, the operator can readily control the admission of steam into the cylinder J, to provide for the raising and lowering of the ram N, carried on the outer end of the piston rod 0, moving inside of the steam cylinder. The ram N, carries in its lower face the ordinary dressing die n, and has at opposite sides thereof the laterally extending slide bars or heads P, which work in .the opposite guide strips Q, which strips are securely bolted to the inside of the opposite frame arms H, as clearly shown in Fig. 1, of the drawings.

The swinging hammer frame G, is capable of being swung from a vertical to a horizontal position and adjusted at any set angle intermediate of these two positions, whereby the same is rendered available for use in dressing drilling bits and other tools on every necessary part thereof, and said frame in order to render these adjustments easily secured, carries the opposite depending weight arms R. The opposite depending weight arms R, are securely attached at their upper ends 1, to the frame arms H, directly above the upper ends of the bearing sides D, and are provided inter mediate of their ends with the bearing openings S, loosely embracing the outer ends of the pivot bolts F, outside of the bearing sides D, and the said weight arms R, have attached to their lower extremities, which work outside of the sides of the supporting base, the curved counterbalancing weights T. The counterbalancing weights T, are suiiiciently heavy to counter-balance the weight of the swinging frame G, and the devices carried thereby, in order that the operator and helper can easily swing the hammer frame to either side of the anvil directly thereunder, so as to quickly and readily adjust the position of the ram, by simply pressing the frame one way or the other as may be required by the particular work being operated upon.

In order to provide means for holding the hammer frame in any adjusted position so that it will remain steady and firm during operation, I employ the securing pins U, adapted to pass through perforations u, in the opposite frame arms R, and to engage any one of the series of perforations a, formed in the arc of a circle in the sides D, of the sup porting base directly below the perforations E, therein. By reason of this adjustment of the swinging hammer-frame and the means for securing it in any adjusted position, the same is rendered available for use in connection with work on which the ordinary steam hammers or rams could not be used. At this point reference is again made to the specific construction of the shiftable anvil block 0, and by reference to Fig. 2, of the drawings particularly, it will be seen that either rest face of the block can be moved to a position directly under the ram N, so that the different sized drills can be readily operated upon. It is of course well known that drills are manufactured in different thicknesses and widths, and in order to render the short stroke ram N, available for use in connection with these various sized tools, it is necessary to construct the anvil as described, and provide for the shifting thereof in connection with the swinging adjustment of the hammer frame.

A clearer idea of the use of the hammer will be readily apparent from the illustration of Figs. 1 and 2 of the drawings. In Fig. 1, the hammer is represented as being in a vertical position ready to operate on the flat and concaved sides of a drill bit, while in Fig. 2 of the drawings, the hammer and its frame are shown tilted or swung at an angle to the vertical center of the anvil, whereby the ram is made to operate on the beveled edge of the bit. Therefore, means are provided whereby the several parts of a piece of work can be dressed off with but a single heating, whereas ordinary hammers cannot be employed for such work at all. In connection with the use of the hammer for putting the beveled cutting edge on a bit, it is to be observed that the die n, in the ram is of a width less than the bit, and it is therefore necessary to have the bit shifted laterally back and forth on the anvil in order to be dressed over its entire surface by the reciprocating ram, and to provide for this operation I employ the U -shaped work shifting yoke X. The U shaped work shifting yoke X, is sufficiently large, so as to fit loosely over the bit or other similar tool being operated on, and is provided at one side with the off-standing arm :20, the outer extremity of which is pivotally attached at so, to the hand lever W, intermediate of its ends. The hand-lever W, is provided with a lower pointed end '0, which loosely fits in a pointed socket formed in the bearing lug V, cast integrally with the stationary supporting base B, at one side thereof. By grasping the lever 'W, and moving the same back and forth, the work can be readily shifted on the face of the anvil block. The ram N, is forced onto the work in the ordinary manner, and the upward stroke thereof is eased by means of the buffer springs Y, secured to the top of the hammer frame G, and not only provides means for easing the upward stroke of the ram, but also preventing the lower head of the cylinder from being injured.

In certain classes of work it is desirable to have the hammer disposed at one side of its support, and in order to provide for this the modification shown in Fig. 3 of the drawings is observed. It will be seen that the construction disclosed in this modification is simply the employment of one-half of the swinging frame G. Therefore the swinging frame is provided with only a single frame arm II, to the upper off-standing end of which is bolted the steam cylinder in the same manner as previously described, and

the said single frame arm H, is pivoted on a single pivot bolt S, arranged in the upper end of a single base standard B, and a single weight arm R, is employed, which weight arm is attached to one side of the frame arm I-I', above the base standard B. The operation of the modified construction is identical with that of the preferred form previously described, as will be easily understood.

Other modifications will suggest themselves to those skilled in the art, and I will also have it understood that changes in the form, proportion and the minor details of construction may be resorted to without departing from the principle or sacrificing any of the advantages of this invention.

Having described the invention, what I claim, and desire to secure by Letters Patent, 1s

1. In a steam hammer, the supporting base, a swinging hammer-frame pivoted to said base and having a weighted arm extending below its point of pivot, the steam-controlled ram devices, and a separate adjustable connection between the frame and said base, substantially as set forth.

2. In a steam hammer, the combination of a supporting base having a perforated bearing side, a swinging hammer frame embracing and pivoted to said bearing side and carrying a depending weight arm, a counterbalancing weight secured to the lower end of said weight arm, and the steam ram devices mounted on the hammer frame, substantially as set forth. I

3. In a steam hammer, an open supporting base, a shiftable anvil mounted inside of the base and having a lower supplemental anvilface 0 disposed at one side, a counterbalanced swinging hammerframe pivoted to and adjustable on the base, and a steam controlled ram slidinginside of said hammer frame, and adapted to play over either anvil-face substantially as set forth.

4. In a steam hammer, the combination of an open supporting base, a shiftable anvil block mounted within the base and having separate top rest faces,a counterbalanced inverted U-shaped hammer frame pivoted to and adjustable on said supporting base, a

. separate adjustable connection between the frame and the base and a steam controlled ram sliding inside of the hammer frame over the anvil, substantially as set forth.

5. In a steam hammer, the combination of a stationarysupporting base having opposite parallel bearing sides provided with an arc seriesof perforations, a counterbalanced swinging hammer frame embracing and pivoted to said bearing sides and having depending weight arms provided with perforations, securing pins adapted to pass through the perforations in said weight arms and to engage those in the bearing sides, and a steam controlled ram sliding inside of the hammer frame, substantially as set forth.

6. In a steam hammer, a stationary supporting base having opposite parallel bearing sides, the anvil arranged within the base, a swinging-inverted U-shaped hammer frame comprising opposite parallel frame arms pivoted at their lower ends inside of the bearing sides on pivot bolts passing therethrough, slide guides bolted to the inner sides of the opposite frame arms, the sliding ram having guide blocks moving in said guides,the steam cylinder and valve chest bolted to the top of the frame and controlling said ram, opposite depending weight arms attached at their upper ends to the opposite parallel frame arms and loosely working on the pivot bolt outside of the bearing sides, and counterbalancing weights attached to the lower ends of the weight arms, substantially as set forth.

'7. In a steam hammer, the combination with the base, the anvil arranged within the base, and the reciprocating ram working over the anvil; of an upright hand-lever fulcrumed at its lower end on said base, and a workshifting yoke connected to said hand lever at a pointintermediate of its ends, substantially as set forth.

8. In a steam hammer the combination of the base having a socketed bearing lug, the anvil arranged within the base the reciproeating ram working over the anvil, a U- shaped work shifting yoke having an offstanding arm, and a hand lever pivoted to said off-standing arm and provided with a lower pointed end loosely fitting said socketed bearing lug, substantially-as set forth.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in the presence of two witnesses.

THEODORE MICHAEL SHEARER.

Witnesses:

JOHN G. IVIOKNIGH'I, PHILIP A. SHERMAN. 

